The proposed debentures, to be listed on the Colombo Stock Exchange alongside HNB's other listed and rated debentures, will have a maturity of 10 years with principal repayment as a bullet payment on maturity.
Coupon payments will be semi-annual at a fixed rate and do not contain any deferral clauses.
As at June 2011, HNB's tier I and total capital adequacy ratio (CAR) was 9.13 percent and 10.3 percent, at the bank level.
"The subordinated debenture issue will increase HNB's regulatory Tier 2 capital from 2.7 billion rupees as at June 2011 to 4.7 billion rupees and enable the bank to better match projected growth in its housing loan book," Fitch Ratings said.
Fitch estimates that the bank's total regulatory CAR would incrementally rise by about 0.87 percent after the issuance in June 2011, excluding un-audited profit for the six-month period ended June 2011